A very common question we get is when a baby can go all night without a feeding. This article will outline general guidelines about how many night-feedings you can expect at each age for breastfeeding and formula-fed babies. Breastfed babies can be night-weaned around 6-9 months old, on average, while formula-fed babies can night-wean around 4-6 months old. Night Weaning: What do the doctors say? In my experience, pediatricians seem to disagree frequently to the answer to the question